Agriculture - Mock Test 70

Question 691

For managing acid soils following chemical amendment is quite essential?

A) ZnSO4 B) CuO C) CaO D) CaSO4. 2H2O

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Question 692

First 15 cm layer of land, which is ploughed for cultivation of crop, is called?

A) Furrow slice B) Rhyzosphere soil C) Soil D) Soil profile

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Question 693

Ferrows oxide can be obtained during chemical process weathering under the heads of?

A) Solution B) Oxidation C) Hydration D) None of theseb

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Question 694

Father of Soil Microbiology is?

A) S.N. Winogradsky B) Bejerinck C) A Waksman D) Liebig

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Question 695

Farm yard manure?

A) Balanced food for plants B) Recommended for salinity reclamation C) Tends to make soil acidic D) Tends to make soil alkaline

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Question 696

Examples of cumulose materials are?

A) Gneiss B) Till plain C) Colluvial D) Peat and Muc

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Question 697

Etridiazol and nitrapyrin ______ oxidation of ammodia to nitrates?

A) Accelerates B) Maintains C) Inhibits D) No effect

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Question 698

Erosion losses of nitrogen is _____ kg N/year?

A) 10?40 B) 20?60 C) 40?80 D) 60?90

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Question 699

Entry of K+ ions through root hair having to low K+ ion content in the soil is mediated through?

A) Ion exchange B) Mass flows phenomenon C) Donan equibibrium process D) Utilization of metabolic energy

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Question 700

Eluviations refers to?

A) Removal of clay from above horizons to lower horizons B) Removal of clay and sesquioxide from above horizons to lower horizons C) Removal of sesquioxide from above horizons to lower horizons D) None of the above

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